JPS597416Y2 - Dredging dewatering equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for removing accumulated sediment and sludge from sewers, reservoirs, ports, rivers, etc., and its purpose is to have good dredging performance and to efficiently remove dredged sediment and sludge. It is an object of the present invention to provide the above-mentioned device which is equipped with a dewatering function and has good workability for transportation.

The present invention will be described in detail below based on embodiments shown in the drawings.

Although the drawings show the device of the present invention installed in a car, it goes without saying that the device is not necessarily installed in a car for use.

In the figure, 1 is a vacuum tank, which is roughly cylindrical in shape and installed so that its central axis is inclined.The bottom of the tank has a sludge discharge part 2 at its lowest position, and a solid matter extraction part at its highest position. It has part 3.

The sludge water discharge part 2 is a discharge port 1 established on the bottom of the vacuum tank 1.
8 and a sludge water delivery chamber 19 integrally formed with the tank 1 in communication with this discharge port 18.
is connected to the sludge water delivery pipe 20 at its lowest part.

The solid matter removal section 3 consists of a solid matter drop port 21 provided at the bottom of the vacuum tank 1, and a take-out chamber 22 formed at the bottom of the tank 1 in communication with the drop port 21. 23, a viewing window 24, and a light fixture (not shown).

Further, the vacuum tank 1 has a cylindrical cage 4 inside, the center axis of which coincides with the center axis of the vacuum tank 1, and the cage 4
is housed so as to have an appropriate distance from the inner wall surface of the vacuum tank 1.

That is, the vacuum tank 1 passes through one side thereof and extends into the tank 1 on the central axis, and one end is inside the tank 1 and the other end is outside the tank 1, and is rotatably supported by bearings 5 and 5', respectively. It has a shaft 6, and the cage 4 is fixed and held on this rotating shaft 6.

This rotating shaft 6 is rotated by the drive of a drive device 7 such as an electric motor provided at an appropriate location outside the vacuum tank 1, and therefore the cage 4 fixed to this shaft also rotates around its central axis. I will do it.

The basket 4 has an opening on one side and is provided with numerous small holes having a mesh size of about 1.5 cm over at least the entire circumferential surface, and the opening 8 is located at the bottom of the vacuum tank 1. It is located directly above the solid matter removal section 3.

Moreover, the cage 4 is provided with a net-like spiral wall 9 extending between the inner circumferential surface and the rotating shaft 6, so that the solids fed into the interior through the suction pipe 10 are directed in the direction of the opening 8 as the cage 4 rotates. This serves as a solid material discharge path 11.

The suction pipe 10 is connected to the vacuum tank 1, and the inner end extending into the tank 1, that is, the discharge port 12, passes through the closed side surface of the basket 4 and faces the solid material discharge path 11 inside the basket 4. 1 Extending outside. An air jet hole 14 for blowing air into the pipe 10 is provided at the end, that is, the suction port 13, in order to improve the suction ability.

Of course, this air may be supplied by an air supply device such as a compressor, but in this embodiment, exhaust air from the vacuum pump 15 is used.

That is, the exhaust port 16 of the vacuum pump 15 that communicates with the vacuum tank 1 to form a vacuum in the tank 1 and the air jet hole 14 provided at the suction port 13 of the suction pipe 10 are connected to the pipe line 1.
7 to guide the exhaust air from the vacuum pump 15 to the air jet hole 14.

In this embodiment, three vacuum pumps 15 are provided, all of which communicate with the vacuum tank 1.

The air outlet 14 of the suction port 13 of the suction pipe 10 communicates with one specific vacuum pump 15 or with all three vacuum pumps 15.

The suction port 13 of the suction pipe 10 may be opened to the same diameter as the pipe as shown in FIG. 6, or may be widened as shown in FIG.

Further, the vacuum pump 15 is connected to a cooling tank 26 provided with a cooling tower 25, and is cooled by water sent from the cooling tank 26.

The water that has cooled the vacuum pump 15 is discharged together with air from the exhaust port 16 of the vacuum pump 15, but the air is discharged in a separation tank 27 provided in the middle of a pipe 17 connecting the port 16 and the air jet hole 14. and is returned to the cooling tower 25 and cooling tank 26.

The aforementioned sludge water discharge pipe 20 has a slurry pump 2 in the middle.
8 and connected to a cyclone 30 via a ball valve 29 downstream thereof.

The slurry pump 28 can be operated not only manually by a manual operation section 31 but also automatically by operating an electrode rod 32 provided in the sludge water delivery chamber 19.

The cyclone 30 is a device that separates the sludge water sent through the sludge water delivery pipe 2o into water, sludge, and other earth and sand, and the settling discharge port 33 discharges the sludge and earth separated from the water.
and a water outlet 34 for discharging water.
A drain pipe 35 is connected to the drain pipe 35.

The dewatering conveyance path 36 is constructed with a screw conveyor 38 extending over the entire length of the frame body 37 in the shape of a gutter or a long box.
The floor surface of the frame body 37 is inclined with the conveying direction of the container upward, and a dumping port 39 is provided at or near the highest position of the floor surface.

This dumping port 39 is preferably located at the rear of the vehicle A when the device is mounted on the vehicle A as shown in the example shown, and when the dewatering outlet 36 is used, it can be tilted by lifting the rear part. It is convenient to provide suitable means, such as an air or hydraulic cylinder 40, for lowering and leveling when not in use.

The screw conveyor 38 is driven by a drive device 41 such as an electric motor, and brushes 43 are provided on the end faces of the screw blades 42 to remove water contained in the sludge and soil during the process of conveying them toward the dumping port 39. It is designed to easily flow down the floor surface of the body 37 in the direction opposite to the dumping port 39.

Further, a submersible pump 44 is provided at the end of the dewatering discharge path 36 opposite to the dumping port 39 , and the discharge port of this pump 44 is located at a position closer to the dumping port 39 than the cyclone 30 . It is connected to the sub-cyclone 45 provided above.

Therefore, the water accumulated in the lower part of the dewatering discharge path 36 is sucked up again, separated from sludge, etc., and then drained.

The water outlet 46 of the sub-cyclone 45 communicates with the drain pipe 35 of the main cyclone 30.

In the figure, 47 is a vacuum breaker, and 48 is a reserve tank for replenishing the cooling tank 26 with water.

Therefore, in this dredging and dewatering device, the suction pipe 1 is
0, sludge, earth and sand accumulated in sewers, reservoirs, etc. are sucked into the tank 1, and first, the cage 4 installed in the tank 1 collects solids of a size that does not pass through the cage 4. The mixture of sludge, earth, sand, and water that has passed through the cage 4, that is, the sludge water, is sent to the cyclone 30 by the operation of the slurry pump 28, where it is removed. This is separated into water, sludge, and earth and sand, and only the sludge and earth are sent to a dewatering outlet 36, and the water is returned to the original sewer, reservoir, etc. through the drain pipe 35.

The sludge and earth sent to the dewatering discharge path 36 are then conveyed to the dumping port 39 by the screw conveyor 38.
The waste is dumped from this dumping port 39. At this time, the dewatering discharge path 36 is inclined with the dumping port 39 facing upwards, but the water contained in the sludge and soil does not reach the dumping port 39 until it reaches the dumping port 39. The sludge and earth and sand flow downward and are dumped from the dumping port 39 in a dehydrated state.

A belt conveyor 49 is arranged below the dumping port 39, and the items are transported to the dumping site, or if the dumping site is far away, they are loaded onto a transport vehicle and transported to the dumping site and dumped there.

On the other hand, the solid matter separated from the sludge water and left in the basket 4 of the vacuum tank 1 is carried to the opening side of the basket 4 as the basket 4 rotates, and falls from the opening 4 into the solid matter fall port 21. It is stored in a take-out chamber 22, and when it accumulates in the chamber 22 to a certain extent, it is taken out and discarded each time.

As an example of the usage state of the device of the present invention, Fig. 9 shows a flowchart in which a car A equipped with the device of the present invention is temporarily installed and fixed in a reservoir. In the figure, 51 is a sedimentation pond, and 5
2 is a sludge dumping pond.

The present invention is structured as described above, and the suction pipe uses the vacuum state created in the vacuum tank by the vacuum pump to suction and remove accumulated sludge and dirt, so the suction action of the suction pipe is It is possible to provide a dredging device that is extremely powerful and has an extremely high dredging capacity.

In addition, it is possible to dewater the dredged sludge and earth using a cyclone and a dewatering outlet before dumping it. Therefore, the volume of sludge and earth at the time of dumping is small, and whether it is transported or dumped, the storage area It can be small, and a large amount can be transported or dumped at once, making it extremely easy to work with.

In addition, since a cage for sorting and removing solids is installed inside the vacuum tank, there is no need for a special space for installing this cage, and the entire device can be made smaller.
By providing the basket inside the vacuum tank, the vacuum suction capacity increases as the vacuum tank becomes larger, making it possible to improve the dredging capacity.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

Fig. 1 is a plan view of the dredging and dewatering device of the present invention, Fig. 2 is a front view, Fig. 3 is a longitudinal front view with a portion cut away, and Fig. 4 is a vacuum tank which is the main structure or part of the device of the present invention. Fig. 5 is an explanatory diagram of the suction system, Fig. 6 is an enlarged view of the suction port of the suction pipe, partially cut away, and Fig. 7 is an explanatory diagram of the suction system.
FIG. 8 is an enlarged view showing another embodiment of the suction port of the suction pipe, and FIG. 9 is a perspective view showing an example of a working state of the apparatus. 1... Vacuum tank, 2... Sludge water discharge section, 3... Solid matter removal section, 4... Basket, 10... Suction pipe, 11...
・Solid material transport path, 20...Sludge water delivery pipe, 2
8... Slurry pump, 30... Cyclone, 33... Sedimentation discharge port, 36...
・Dewatering unloading path, 38... Screw conveyor.

Claims (1)

[Scope of utility model registration request] A cylindrical cage, which rotates around a central axis by a drive device and has a spiral solid material discharge path inside, is housed inside a vacuum tank connected to a suction pipe.
The discharge port of the suction pipe is made to face the carrying-out path of the basket, and a solid matter removal section is provided on the bottom of the tank just below the exit of the carrying-out route.The tank bottom is inclined with this solid matter removal section upward. A sludge water discharge section is provided at a low position, and the sludge water discharge section is connected to the cyclone through a pipe line equipped with a slurry pump, and a gutter-shaped dewatering passage with a screw conveyor installed below the settling discharge port of the cyclone. A dredging dewatering device that is installed by tilting the conveyor with the conveyance direction upward.